Asphalt shingles can weigh up to four pounds per square foot depending on the brand.
Diy metal roof over shingles.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
The weight of the roofing system most buildings are designed to support the heaviest roofing systems.
Climb safety onto the roof with all your supplies including the bucket.
This method has its benefits as well.
Maintaining your metal shingles mix a gallon of hot water a cup of laundry detergent and a cup of bleach in the bucket.
The metal roof must rely on the building s framework for full support.
Install with 1 4 inch metal wood screws at a distance of every two feet.
The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacture has testing for their roofing panels and then the metal is installed to the purlins.
This is by far the most common way to install a metal roof.
In some areas building officials only allow a re roof over one layer of shingles.
3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
If you don t want to take our word for it check with your local building department.
In simple terms if the asphalt shingles are not used to support the metal roof then you can install a metal roof over the asphalt shingles.
Things to know about metal over shingle roof problems.
In this video i cover measuring the roof figuring the metal t.
However it is based upon experience with tens of thousands of installations over many years.
Both metal and shingle roofs are great options for your next roofing project.
This is part 1 of a 6 part video series explaining how i installed a metal roof on my house.
Use notching scissors to notch the metal in the middle so that it will bend over the ridge.
Your metal trim will go along the roof s edges as well as the top ridge.
If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.
After completion there will be a need for maintenance of the metal roofing shingles.
Other areas will allow you to re roof over two layers.
Install the metal trim.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.